from collections import defaultdict
N,K=list(map(int,input().split()))
A=list(map(int,input().split()))

d=defaultdict(int)
A.sort()

for a in A:d[a]+=1
v=[]
for _,x in d.items():v.append(x)
v.sort()
v.reverse()

n=v[0]
if len(v)>1:n+=v[1]
if n>=K:print("Yes")
else:print("No")